package com.ang.rsa;
/*
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
*/
import java.security.MessageDigest;

/**
 * BASE64的加解密工具类
 */
public class BASE64Utils {
    public static final String KEY_SHA = "SHA";
    public static final String KEY_MD5 = "MD5";

    /**
     * BASE64解密
     *
     * @param key
     * @return
     * @throws Exception
     */
//    public static byte[] decryptBASE64(String key) throws Exception {
//        return (new BASE64Decoder()).decodeBuffer(key);
//    }

    /**
     * BASE64加密
     *
     * @param key
     * @return
     * @throws Exception
     */
//    public static String encryptBASE64(byte[] key) throws Exception {
//        return (new BASE64Encoder()).encodeBuffer(key);
//    }

    /**
     * MD5加密
     *
     * @param data
     * @return
     * @throws Exception
     */
    public static byte[] encryptMD5(byte[] data) throws Exception {

        MessageDigest md5 = MessageDigest.getInstance(KEY_MD5);
        md5.update(data);

        return md5.digest();

    }

    /**
     * SHA加密
     *
     * @param data
     * @return
     * @throws Exception
     */
    public static byte[] encryptSHA(byte[] data) throws Exception {

        MessageDigest sha = MessageDigest.getInstance(KEY_SHA);
        sha.update(data);

        return sha.digest();

    }
}
